138514645 has 8 divisors (see below), whose sum is σ = 166329504. Its totient is φ = 110737104.

The previous prime is 138514639. The next prime is 138514711. The reversal of 138514645 is 546415831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138514645 - 2³ = 138514637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379 + ... + 16648.

It is an arithmetic number, because the mean of its divisors is an integer number (20791188).

Almost surely, 2^138514645 is an apocalyptic number.

It is an amenable number.

138514645 is a deficient number, since it is larger than the sum of its proper divisors (27814859).

138514645 is a wasteful number, since it uses less digits than its factorization.

138514645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18659.

The product of its digits is 57600, while the sum is 37.

The square root of 138514645 is about 11769.2244859209. The cubic root of 138514645 is about 517.4065208019.

It can be divided in two parts, 13851 and 4645, that added together give a square (18496 = 136²).

The spelling of 138514645 in words is "one hundred thirty-eight million, five hundred fourteen thousand, six hundred forty-five".